style: font default modify

src/sites/assets/styles/reset.scss

@@ -54,9 +54,8 @@ video {
   margin: 0;
   padding: 0;
   border: 0;
-  font-family: PingHei, Microsoft YaHei, Lucida Grande, Lucida Sans Unicode,
-    STHeiti, Helvetica, Arial, Verdana, 'sans-serif', PingHei-light, SimHei,
-    Droid Sans;
+  font-family: PingFang SC, Microsoft YaHei, Helvetica, Hiragino Sans GB, SimSun,
+    sans-serif;
   -webkit-overflow-scrolling: touch;
 }
 

src/styles/variables.scss

@@ -19,8 +19,8 @@ $black: #000;
 // padding
 $padding-xs: 8px 12px;
 
-$font-family: PingHei, 'Lucida Grande', 'Lucida Sans Unicode', STHeiti,
-  Helvetica, Arial, Verdana, 'sans-serif', 'PingHei-light', SimHei, 'Droid Sans' !default;
+$font-family: PingFang SC, Microsoft YaHei, Helvetica, Hiragino Sans GB, SimSun,
+  sans-serif !default;
 
 // Font
 $font-size-0: 10px;